U.S. patent application number 15/565028 was filed with the patent office on 2018-04-12 for device for storing and removing cardboard for a bridge in a corrugated cardboard production line.
The applicant listed for this patent is BHS Corrugated Maschinen- und Anlagenbau GmbH. Invention is credited to Michael BAUERNFEIND, Alfons GNAN, Robert SCHARNAGL.
Application Number | 20180099472 15/565028 |
Document ID | / |
Family ID | 53924402 |
Filed Date | 2018-04-12 |
United States Patent
Application |
20180099472 |
Kind Code |
A1 |
GNAN; Alfons ; et
al. |
April 12, 2018 |
DEVICE FOR STORING AND REMOVING CARDBOARD FOR A BRIDGE IN A
CORRUGATED CARDBOARD PRODUCTION LINE
Abstract
A device for cardboard storage and removal for a bridge in a
corrugated cardboard production line includes a bridge over which a
conveyor system for conveying the single-sided laminated corrugated
cardboard web is arranged. The exit end of the conveyor system for
conveying the single-sided laminated corrugated cardboard web is
provided with a clamping and cutting unit and a movable cardboard
storage carriage unit is provided under the conveyor system for
conveying the single-sided laminated corrugated cardboard web,
under which conveyor system a conveyor belt system is provided in
the bridge, and in the bridge an opening is provided, under which a
waste cardboard collecting carriage is provided. The movable
cardboard storage carriage unit stores the cardboard by means of
cardboard storage rolls, which retain the single-sided laminated
corrugated cardboard web flat on the bridge. In the event that a
splicing defect is detected, the defective piece is cut out by the
clamping and cutting unit and ejected by the conveyor belt system
to the waste cardboard collecting carriage through the opening.
Hence, it follows that productivity is improved.
Inventors: |
GNAN; Alfons; (Vilseck,
DE) ; SCHARNAGL; Robert; (Schwarzenbach, DE) ;
BAUERNFEIND; Michael; (Schwarzenbach, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
BHS Corrugated Maschinen- und Anlagenbau GmbH |
Weiherhammer |
|
DE |
|
|
Family ID: |
53924402 |
Appl. No.: |
15/565028 |
Filed: |
February 26, 2016 |
PCT Filed: |
February 26, 2016 |
PCT NO: |
PCT/EP2016/054112 |
371 Date: |
October 6, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B31F 1/2813 20130101;
B29C 65/7894 20130101; B65H 16/021 20130101; B29C 65/74 20130101;
B29C 65/78 20130101; B29C 65/7873 20130101; B29C 66/43 20130101;
B29C 66/853 20130101; B31F 1/28 20130101; B65H 23/048 20130101;
B31F 1/2818 20130101; B65H 26/02 20130101; B31F 1/2822 20130101;
B65H 2701/1762 20130101; B65H 19/20 20130101; B32B 37/20 20130101;
B29C 66/004 20130101; B65H 19/102 20130101; B65H 20/06 20130101;
B29C 66/006 20130101; B31F 1/2804 20130101; B29C 65/7841 20130101;
B29C 66/8124 20130101; B31F 1/2831 20130101; B65H 19/18 20130101;
B29C 66/83421 20130101; B65H 19/14 20130101; B65H 21/00 20130101;
B31F 1/2836 20130101 |
International
Class: |
B31F 1/28 20060101
B31F001/28; B65H 20/06 20060101 B65H020/06; B65H 21/00 20060101
B65H021/00; B65H 23/04 20060101 B65H023/04; B65H 26/02 20060101
B65H026/02 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 9, 2015 |
CN |
201520213017.5 |
Claims
1. A device for cardboard storage and removal for a bridge in a
corrugated cardboard production line, the device comprising: a
bridge structure with a planar surface on an upper side; a conveyor
system for conveying a single-sided laminated corrugated cardboard
web arranged above the bridge structure, said conveyor system
comprising a conveyor belt, extending parallel to the planar
surface, for conveying the single-sided laminated corrugated
cardboard web and the conveyor system having an entry end and an
exit end where a clamping and cutting unit is provided; a first
cardboard guide roll and a second cardboard guide roll arranged
with a vertical gap between the first cardboard guide roll and the
second cardboard guide roll, the first cardboard guide roll and the
second cardboard guide roll being provided outside of the exit end
of the conveyor system for conveying the single-sided laminated
corrugated cardboard web; a separating plate extending parallel to
a direction of travel of the conveyor belt for conveying the
single-sided laminated corrugated cardboard web, the separating
plate being provided below the conveyor system for conveying the
single-sided laminated corrugated cardboard web; a movable
cardboard storage carriage unit provided on the bridge structure
under the conveyor system for conveying the single-sided laminated
corrugated cardboard web to form a sliding pair with the bridge
structure; and a drive system connected to the movable cardboard
storage carriage unit, which comprises a first cardboard storage
roll and a second cardboard storage roll, wherein a vertical gap is
provided between the first cardboard storage roll and the second
cardboard storage roll, the first cardboard guide roll, the first
cardboard storage roll, the second cardboard guide roll and the
second cardboard storage roll being arranged one after another
along a vertical direction with a vertical gap between each of the
first cardboard guide roll, the first cardboard storage roll, the
second cardboard guide roll and the second cardboard storage roll;
a conveyor belt system provided in the bridge structure under the
movable cardboard storage carriage unit, wherein an opening is
provided in the bridge structure adjacent to one end of the
conveyor belt system, and a flap provided in the opening, wherein a
waste cardboard collecting carriage is provided under the flap.
2. A device for cardboard storage and removal for the bridge in the
corrugated cardboard production line according to claim 1, wherein
the conveyor belt system comprises a forward and reverse drive
system.
3. A device for cardboard storage and removal for the bridge in the
corrugated cardboard production line according to claim 1, wherein
the first cardboard guide roll and the second cardboard guide roll
are stationary rotatably mounted.
4. A device for cardboard storage and removal for the bridge in the
corrugated cardboard production line according to claim 1, wherein
the first cardboard guide roll is arranged essentially at a height
of the conveyor system.
5. A device for cardboard storage and removal for the bridge in the
corrugated cardboard production line according to claim 1, wherein
the second cardboard guide roll is arranged essentially at a height
of the separating plate.
6. A device for cardboard storage and removal for the bridge in the
corrugated cardboard production according to claim 1, wherein the
conveyor belt system conveys usable single-sided laminated
corrugated cardboard web.
7. A device for cardboard storage and removal for the bridge in the
corrugated cardboard production line according to claim 1, wherein,
after a change in a conveying direction of the conveyor belt
system, the conveyor belt system transports a detected defective
piece of the single-sided laminated corrugated cardboard web to one
of the opening and the flap.
8. A device for cardboard storage and removal for the bridge in the
corrugated cardboard production line according to claim 7, wherein
the clamping and cutting unit cuts the detected defective piece of
the single-sided laminated corrugated cardboard web out of the
single-sided laminated corrugated cardboard web.
9. A device for cardboard storage and removal for the bridge in the
corrugated cardboard production line according to claim 1, further
comprising: a splicing device for joining usable single-sided
laminated corrugated cardboard webs together.
10. A device for cardboard storage and removal for the bridge in
the corrugated cardboard production line according to claim 9,
wherein the splicing device is displaceable between an active
splicing position and an inactive position, wherein, in the active
splicing position, at least one of the usable single-sided
laminated corrugated cardboard webs is halted for splicing.
11. A method for cardboard storage and removal for a bridge in a
corrugated cardboard production line, the method comprising:
providing a device comprising a bridge structure with a planar
surface on an upper side, a conveyor system for conveying a
single-sided laminated corrugated cardboard web arranged above the
bridge structure, a first cardboard guide roll and a second
cardboard guide roll, a separating plate, a movable cardboard
storage carriage unit provided on the bridge structure under the
conveyor system for conveying the single-sided laminated corrugated
cardboard web to form a sliding pair with the bridge, a drive
system connected to the movable cardboard storage carriage unit and
a conveyor belt system provided in the bridge structure under the
movable cardboard storage carriage unit, said conveyor system
comprising a conveyor belt, extending parallel to the planar
surface for conveying the single-sided laminated corrugated
cardboard web and the conveyor system having an entry end and an
exit end where a clamping and cutting unit is provided, wherein a
vertical gap is provided between the first cardboard guide roll and
the second cardboard guide roll, the first cardboard guide roll and
the second cardboard guide roll being provided outside of the exit
end of the conveyor system for conveying the single-sided laminated
corrugated cardboard web, the separating plate extending parallel
to a direction of travel of the conveyor belt for conveying the
single-sided laminated corrugated cardboard web, the separating
plate being provided below the conveyor system for conveying the
single-sided laminated corrugated cardboard web, the drive system
comprising a first cardboard storage roll and a second cardboard
storage roll, wherein a vertical gap is provided between the first
cardboard storage roll and the second cardboard storage roll, the
first cardboard guide roll, the first cardboard storage roll, the
second cardboard guide roll and the second cardboard storage roll
being arranged one after another along a vertical direction with a
vertical gap between each of the first cardboard guide roll, the
first cardboard storage roll, the second cardboard guide roll and
the second cardboard storage roll, wherein an opening is provided
in the bridge structure adjacent to one end of the conveyor belt
system, and a flap is provided in the opening, wherein a waste
cardboard collecting carriage is provided under the flap.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a United States National Phase
Application of International Application PCT/EP2016/054112 filed
Feb. 26, 2016 and claims the benefit of priority under 35 U.S.C.
.sctn. 119 of Chinese Patent Application CN 2015 2021 3017.5 filed
on Apr. 9, 2015, the entire contents of which are incorporated
herein by reference.
FIELD OF THE INVENTION
[0002] The invention concerns a machine, in particular with a
corrugated cardboard processing device and in particular with a
device for storing and removing cardboard for a bridge in a
corrugated cardboard production line. The invention also concerns a
corresponding method.
BACKGROUND OF THE INVENTION
[0003] A single-sided laminated corrugated cardboard web of a
corrugated cardboard production line is stored in a loop on a
bridge which produces folding or marking on the surface of the
cardboard web. Furthermore, splicing errors or other rejects which
accumulate on the bridge cannot be removed in a convenient and
timely manner which adversely affects productivity.
SUMMARY OF THE INVENTION
[0004] The task of the invention consists of producing a device for
the storage and removal or disposal of cardboard for a bridge in a
corrugated cardboard production line in order to solve the existing
problems wherein the single-sided laminated corrugated cardboard
web is folded on the bridge and the rejects on the bridge cannot be
removed in a convenient and timely manner. The intention also is to
create a corresponding method.
[0005] This task is resolved by a device for cardboard storage and
removal for a bridge in a corrugated cardboard production line,
comprising a bridge with a planar surface on the upper side,
wherein a conveyor system for conveying a single-sided laminated
corrugated cardboard web is arranged above the bridge, said system
comprising a conveyor belt, running parallel to the planar surface,
for conveying the single-sided laminated corrugated cardboard web
and has an entry end and an exit end where a clamping and cutting
unit is provided, a first cardboard guide roll and a second
cardboard guide roll, which are arranged with a vertical gap
between them, are provided outside of the exit end of the conveyor
system for conveying the single-sided laminated corrugated
cardboard web, a separating plate, which runs parallel to the
direction of travel of the conveyor belt for conveying the
single-sided laminated corrugated cardboard web, is provided below
the conveyor system for conveying the single-sided laminated
corrugated cardboard web, a movable cardboard storage carriage unit
is provided on the bridge under the conveyor system for conveying
the single-sided laminated corrugated cardboard web to form a
sliding pair with the bridge, and a drive system is connected to
the movable cardboard storage carriage unit, which comprises a
first cardboard storage roll and a second cardboard storage roll,
which are arranged with a vertical gap between them, the first
cardboard guide roll, the first cardboard storage roll, the second
cardboard guide roll and the second cardboard storage roll are
arranged one after the other along the vertical direction with a
vertical gap between each of them, a conveyor belt system is
provided in the bridge under the movable cardboard storage carriage
unit, an opening is provided in the bridge adjacent to one end of
the conveyor belt system, and a flap, under which a waste cardboard
collecting carriage is provided, is provided in the opening.
Furthermore, this task is resolved by a method for cardboard
storage and removal for a bridge in a corrugated cardboard
production line, comprising the provision of a device according to
the invention.
[0006] A device for cardboard storage and removal for a bridge in a
corrugated cardboard production line according to the invention
comprises a bridge with a planar surface on the upper side, wherein
a conveyor system for conveying a single-sided laminated corrugated
cardboard web, which comprises a conveyor belt running parallel to
the planar surface conveying the single-sided laminated corrugated
cardboard web, is arranged above the bridge.
[0007] Insofar as the term "cardboard" is used, this is preferably
intended to mean corrugated cardboard. The single-sided laminated
corrugated cardboard web is preferably continuous. Advantageously,
it has a smooth liner web/laminating web and a fluted cardboard web
which are glued together.
[0008] The conveyor system for conveying the single-sided laminated
corrugated cardboard web has an entry end and an exit end where a
clamping and cutting unit is provided. Advantageously, the clamping
and cutting unit has a clamping part and a cutting part associated
with the single-sided laminated corrugated cardboard web, wherein
said parts can be operated or, as the case may be, displaced
preferably independently of each other.
[0009] Outside of or downstream from the exit end of the conveyor
system for conveying the single-sided laminated corrugated
cardboard web, a first cardboard guide roll and a second cardboard
guide roll are provided which are aligned or arranged with a
vertical gap between each other.
[0010] A separating plate running parallel to the direction of
travel of the conveyor belt for conveying the single-sided
laminated corrugated cardboard web is provided under the conveyor
system for conveying the single-sided laminated corrugated
cardboard web.
[0011] A movable or displaceable cardboard storage carriage unit is
provided on the bridge under the conveyor system for conveying the
single-sided laminated corrugated cardboard web to form a sliding
pair with the bridge.
[0012] A drive system is connected to the movable cardboard storage
carriage unit which comprises a first cardboard storage roll and a
second cardboard storage roll, which are aligned or arranged with a
vertical gap between each other.
[0013] The first cardboard guide roll, the first cardboard storage
roll, the second cardboard guide roll and the second cardboard
storage roll are arranged in a vertical direction one after the
other with a vertical gap between each other.
[0014] A conveyor belt arrangement is provided in the bridge under
the movable cardboard storage carriage unit, wherein an opening in
the bridge is also provided adjacent to one end of it.
[0015] A flap, under which a waste cardboard collecting carriage is
located, is provided in/near the opening.
[0016] Advantageously, the conveyor belt of the conveyor system for
conveying the single-sided laminated corrugated cardboard web is
continuous. Preferably it is driven. It is able, in particular, to
convey the single-sided laminated corrugated cardboard web to the
clamping and cutting unit. Preferably, the conveyor belt conveys
the single-sided laminated corrugated cardboard web from a guide
frame means to the clamping and cutting unit.
[0017] The first cardboard guide roll and the second cardboard
guide roll are each mounted advantageously so that they rotate. In
particular, they are able to guide, or redirect the single-sided
laminated corrugated cardboard web. It is advantageous if the first
and/or second cardboard guide roll is/are fixed in place, meaning,
in particular, that they cannot be displaced perpendicularly to
their rotational axis.
[0018] The separating plate preferably has an unbroken surface.
Alternatively, it is perforated by at least one opening. It is
expedient if the separating plate is designed to be level.
Alternatively, it is not level. During use, the separating plate is
able, in particular, to prevent a first section of the single-sided
laminated corrugated cardboard web conveyed by the conveyor system
for conveying the single-sided laminated corrugated cardboard web
and a second section of the single-sided laminated corrugated
cardboard web conveyed in the conveyor belt system from contacting
each other, which can result in damage to them, or damage to the
single-sided laminated corrugated cardboard web. The separating
plate thus serves as a spatial separation between these sections.
This applies, in particular, when driving the device for cardboard
storage and removal.
[0019] The cardboard storage carriage unit advantageously forms a
partner. It comprises the cardboard storage rolls, which, in
particular, are each mounted there to rotate. By displacing the
cardboard storage carriage unit, the cardboard storage rolls are
also displaceable, so to speak.
[0020] The conveyor belt system comprises, advantageously, a
continuous conveyor belt. The conveyor belt system serves to convey
the single-sided laminated corrugated cardboard web, in particular,
the usable and faulty parts of the single-sided laminated
corrugated cardboard web. Relative to the conveying direction of
the single-sided laminated corrugated cardboard web, said belt is
arranged preferably downstream of the conveyor system for conveying
the single-sided laminated corrugated cardboard web.
[0021] The conveyor belt of the conveyor belt system can be driven
advantageously forwards and backwards. Thus, it is possible to
eject an individual piece of the single-sided laminated corrugated
cardboard web.
[0022] The opening is advantageously arranged laterally next to the
conveyor belt system. It extends preferably in a horizontal
plane.
[0023] It is advantageous if the flap can be pivoted about a
horizontal pivot axis, in particular. Advantageously, the flap can
be moved between an open position and a closed position. In the
open position of the flap, the opening is preferably open, whereas
in the closed position, the flap advantageously closes the opening.
Preferably, in the open position, defective cardboard can be
ejected through the opening.
[0024] The waste cardboard collecting carriage can be designed in
any manner. Preferably it has wheels to support it from the ground,
as well as a base.
[0025] Alternatively, it is designed without wheels. The waste
cardboard collecting carriage may or may not have its own
drive.
[0026] The working principle of the present embodiment is as
follows: the entry end of the conveyor system for conveying the
single-sided laminated corrugated cardboard web is arranged
adjacent to the exit from the production machine for producing the
single-sided laminated corrugated cardboard web which issues the
single-sided laminated corrugated cardboard web; the single-sided
laminated corrugated cardboard web issued from the production
machine for producing the single-sided laminated corrugated
cardboard web is transported to the conveyor belt for conveying the
single-sided laminated corrugated cardboard web by an inclined
guide frame means and the single-sided laminated corrugated
cardboard web is transported by the conveyor belt for conveying the
single-sided laminated corrugated cardboard web to the exit end of
the conveyor system for conveying the single-sided laminated
corrugated cardboard web and is transported further to the conveyor
belt system, after which it is run through the clamping and cutting
unit.
[0027] The movable cardboard storage carriage unit moves
horizontally from the exit end to the entry end of the conveyor
system for conveying the single-sided laminated corrugated
cardboard web, wherein, in order to provide the storage for the
cardboard, the first cardboard storage roll and the second
cardboard storage roll in the movable cardboard storage carriage
unit feed the single-sided laminated corrugated cardboard web in
turn around the first cardboard guide roll, the first cardboard
storage roll, the second cardboard guide roll and the second
cardboard storage roll.
[0028] When the movable cardboard storage carriage unit reaches the
limit of its path, the stored single-sided laminated corrugated
cardboard web reaches its maximum length.
[0029] Because of the separating plate, the corrugated tips of the
single-sided laminated corrugated cardboard web are protected from
damage and the single-sided laminated corrugated cardboard web
itself is not damaged in the event that the production machine for
producing the single-sided laminated corrugated cardboard web is
started up again.
[0030] If a detection means detects a splicing defect or other
defective pieces, the clamping and cutting unit is started to
prevent the further transportation of the single-sided laminated
corrugated cardboard web. In the meantime, the control system
commands the movable cardboard storage carriage unit to return to
the exit end of the conveyor system for conveying the single-sided
laminated corrugated cardboard web, and the single-sided laminated
corrugated cardboard web is cut by the clamping and cutting unit
into two pieces.
[0031] Because of the difference in speeds between the conveyor
belt for conveying the single-sided laminated corrugated cardboard
web and the production machine for producing the single-sided
laminated corrugated cardboard web, the defective or damaged piece
of the single-sided laminated corrugated cardboard web, which did
not run through the clamping and cutting unit, is left on the
conveyor belt for conveying the single-sided laminated corrugated
cardboard web where it forms a loop, whereas the usable piece,
which ran through the clamping and cutting unit, runs through the
movable cardboard storage carriage unit and leaves the conveyor
belt system.
[0032] Then the control system changes the conveying direction of
the conveyor belt system and simultaneously releases the clamping
and cutting unit. The defective piece of the single-sided laminated
corrugated cardboard web, which has remained on the conveyor belt
for conveying the single-sided laminated corrugated cardboard web,
moves forward with the conveyor belt for conveying the single-sided
laminated corrugated cardboard web. Because of the change in the
conveying direction of the conveyor belt system, the defective
piece of the single-sided laminated corrugated cardboard web is
conveyed to the position of the flap and is transported through the
opening to the waste cardboard collecting carriage which is
arranged under the opening.
[0033] After the entire defective piece of the single-sided
laminated corrugated cardboard web has gone through the clamping
and cutting unit, the control system starts up the clamping and
cutting unit again in order to cut off the single-sided laminated
corrugated cardboard web, and, after the defective piece has been
loaded finally into the waste cardboard collecting carriage, the
control system changes the conveying direction of the conveyor belt
system again, and the usable single-sided laminated corrugated
cardboard web is released from the production machine for producing
the single-sided laminated corrugated cardboard web by the clamping
and cutting unit, transported by the movable cardboard storage
carriage unit and then joined to an earlier usable single-sided
laminated corrugated cardboard web. And then the movable cardboard
storage carriage unit is transported further to perform the storage
function.
[0034] Compared with the state of the art, the technical effect of
the present invention is positive and significant. According to the
present invention, a conveyor system for conveying the single-sided
laminated corrugated cardboard web, a movable cardboard storage
carriage unit and a clamping and cutting unit are present on the
bridge outside the exit from the production machine for producing
the single-sided laminated corrugated cardboard web, and a conveyor
belt system, whose conveying direction can be changed, an opening,
and a waste cardboard collecting carriage are provided under the
conveyor system for conveying the single-sided laminated corrugated
cardboard web.
[0035] The movable cardboard storage carriage unit stores the
cardboard by means of cardboard storage rolls and the single-sided
laminated corrugated cardboard web can be kept flat on the bridge.
If a splicing defect is established, the defective piece is cut out
by the clamping and cutting unit and the waste is ejected by the
conveyor belt system through the opening to the waste cardboard
collecting carriage, which improves productivity.
[0036] Furthermore, the conveyor belt system comprises a forward
and reverse drive system. The conveyor belt can be driven in a
first and also in an opposite second direction.
[0037] The splicing device is advantageously telescopic, hinged
and/or pivotable.
[0038] Advantageously, a catwalk ends or runs adjacent to the
splicing device in order to provide easy access to the splicing
device.
[0039] The present invention is described in detail below with
reference to the attached figures. The various features of novelty
which characterize the invention are pointed out with particularity
in the claims annexed to and forming a part of this disclosure. For
a better understanding of the invention, its operating advantages
and specific objects attained by its uses, reference is made to the
accompanying drawings and descriptive matter in which preferred
embodiments of the invention are illustrated.
BRIEF DESCRIPTION OF THE DRAWINGS
[0040] In the drawings:
[0041] FIG. 1 is a diagrammatic view of the device for cardboard
storage and removal for a bridge in the corrugated cardboard
production line of the present invention;
[0042] FIG. 2 is a diagrammatic view of the operating principle of
the movable cardboard storage carriage unit in the device for
cardboard storage and removal for a bridge in the corrugated
cardboard production line of the present invention;
[0043] FIG. 3 is a diagrammatic view illustrating the severing of
the leading end of the defective piece of the single-sided
laminated corrugated cardboard web in the device for cardboard
storage and removal for a bridge in the corrugated cardboard
production line of the present invention;
[0044] FIG. 4 is a diagrammatic view illustrating the discharge of
the defective piece the single-sided laminated corrugated cardboard
web to the device for cardboard storage and removal for a bridge in
the corrugated cardboard production line of the present
invention;
[0045] FIG. 5 is a diagrammatic view showing a section through the
trailing end of the defective piece of the single-sided laminated
corrugated cardboard web in the device for cardboard storage and
removal for a bridge in the corrugated cardboard production line of
the present invention;
[0046] FIG. 6 is a diagrammatic view showing a corrugated cardboard
production line with the device for cardboard storage and removal
of the present invention;
[0047] FIG. 7 is a diagrammatic view illustrating a splicing device
of a device for cardboard storage and removal shown in FIGS. 1 to 5
for a bridge in a corrugated cardboard production line according to
a further embodiment and a splicing process;
[0048] FIG. 8 is a diagrammatic view illustrating a splicing device
of a device for cardboard storage and removal shown in FIGS. 1 to 5
for a bridge in a corrugated cardboard production line according to
a further embodiment and a splicing process;
[0049] FIG. 9 is a diagrammatic view illustrating a splicing device
of a device for cardboard storage and removal shown in FIGS. 1 to 5
for a bridge in a corrugated cardboard production line according to
a further embodiment and a splicing process;
[0050] FIG. 10 is a diagrammatic view illustrating a splicing
device of a device for cardboard storage and removal shown in FIGS.
1 to 5 for a bridge in a corrugated cardboard production line
according to a further embodiment and a splicing process;
[0051] FIG. 11 is a diagrammatic view illustrating a splicing
device of a device for cardboard storage and removal shown in FIGS.
1 to 5 for a bridge in a corrugated cardboard production line
according to a further embodiment and a splicing process;
[0052] FIG. 12 is a diagrammatic view illustrating a splicing
device of a device for cardboard storage and removal shown in FIGS.
1 to 5 for a bridge in a corrugated cardboard production line
according to a further embodiment and a splicing process;
[0053] FIG. 13 is a diagrammatic view illustrating a splicing
device of a device for cardboard storage and removal shown in FIGS.
1 to 5 for a bridge in a corrugated cardboard production line
according to a further embodiment and a splicing process;
[0054] FIG. 14 is a diagrammatic view illustrating a splicing
device of a device for cardboard storage and removal shown in FIGS.
1 to 5 for a bridge in a corrugated cardboard production line
according to a further embodiment and a splicing process; and
[0055] FIG. 15 is a diagrammatic view illustrating a splicing
device of a device for cardboard storage and removal shown in FIGS.
1 to 5 for a bridge in a corrugated cardboard production line
according to a further embodiment and a splicing process.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0056] Referring to FIGS. 1 and 2, the device for cardboard storage
and removal for a bridge in the corrugated cardboard production
line according to the present invention comprises a bridge 100,
which has a planar surface on the top side, wherein above said
bridge a conveyor system 2 for conveying a single-sided laminated
corrugated cardboard web is arranged which comprises a conveyor
belt running parallel to the planar surface conveying the
single-sided laminated corrugated cardboard web.
[0057] The conveyor system 2 for conveying the single-sided
laminated corrugated cardboard web has an entry end and an exit
end, wherein the exit end is equipped with a clamping and cutting
unit 5.
[0058] A first cardboard guide roll 3 and a second cardboard guide
roll 31 are arranged outside of or downstream from the exit end of
the conveyor system for conveying the single-sided laminated
corrugated cardboard web and are aligned or arranged with a
vertical gap between each other.
[0059] A separating plate 6 is arranged under the conveyor system 2
for conveying the single-sided laminated corrugated cardboard web
and extends parallel to the direction of travel of the conveyor
belt for conveying the single-sided laminated corrugated cardboard
web.
[0060] A movable cardboard storage carriage unit 4 is arranged
under the conveyor system 2 for conveying the single-sided
laminated corrugated cardboard web and on the bridge 100, forming a
sliding pair with the bridge 100.
[0061] The movable cardboard storage carriage unit 4 is connected
to a drive system and comprises a first cardboard storage roll 41
and the second cardboard storage roll 42, which are aligned or
arranged with a vertical gap between them. The first cardboard
guide roll 3, the first cardboard storage roll 41, the second
cardboard guide roll 31 and the second cardboard storage roll 42
are arranged, one after the other, in a vertical direction with a
vertical gap between one another.
[0062] A conveyor belt system 8 is provided in the bridge 100 under
the movable cardboard storage carriage unit 4 and an opening
arranged adjacent to one end of the conveyor belt system 8 is also
provided in/on the bridge 100.
[0063] A flap 7 is provided in the opening and a waste cardboard
collecting carriage 9 is provided under the flap 7.
[0064] Furthermore, the conveyor belt system 8 has a forward and
reverse drive system.
[0065] The conveyor belt 201 of the conveyor system 2 is continuous
around its periphery and is guided around two redirecting rolls 202
arranged with a gap between one another. It operates in a
circulating or conveying direction 203 along which the single-sided
laminated corrugated cardboard web 11 is conveyed in the horizontal
to the clamping and cutting unit 5.
[0066] The first cardboard guide roll 3 is arranged downstream of
the conveyor system 2 and with a gap from it and relative to the
conveying direction 203 of the single-sided laminated corrugated
cardboard web 11 on the conveyor belt 201. Preferably, the axes of
the first cardboard guide roll 3 and the redirecting rolls 202 lie
essentially in a common plane which runs advantageously
horizontally.
[0067] The second cardboard guide roll 31 is arranged under the
first cardboard guide roll 3 and with a gap from it. The cardboard
guide rolls 3, 31 or their axes lie in a vertical plane.
[0068] The separating plate 6 extends horizontally under the
conveyor system 2. It extends from the entry side redirecting roll
202 to the second cardboard guide roll 31. The separating plate 6
and the second cardboard guide roll 31 lie essentially in a common
horizontal plane. The width of the separating plate 6
advantageously corresponds to at least the width of the
single-sided laminated corrugated cardboard web 11 in its lateral
direction.
[0069] The cardboard storage carriage unit 4 is displaceable
horizontally. This is performed by the drive system 204, which, for
example, has a drive incorporated in the cardboard storage carriage
unit 4, or an external drive, which is preferably connected
directly or indirectly to the cardboard storage carriage unit 4 by
a driving means, such as a cable, belt, rod, chain or similar. The
cardboard storage carriage unit 4 is advantageously controlled.
[0070] The first cardboard storage roll 41 of the cardboard storage
carriage unit 4 is arranged above a plane including the separating
plate 6, while the second cardboard storage roll 42 of the
cardboard storage carriage unit 4 is arranged under this plane. The
cardboard storage rolls 41, 42 or their axes lie in a vertical
plane.
[0071] The conveyor belt system 8 is arranged under the cardboard
storage carriage unit 4. The conveyor belt 205 of the conveyor belt
system 8 is continuous. It is guided around redirecting rolls 206
and extends laterally beyond a vertical plane which includes the
cardboard guide rolls 3, 31. The conveyor belt 205 extends
laterally on both sides beyond a splicing device which will be
described in more detail below.
[0072] The axes of the redirecting rolls 202, 206, the cardboard
guide rolls 3, 31 and the cardboard storage rolls 41, 42 each run
horizontally and parallel to each other.
[0073] The opening 207 formed in the bridge 100 is located
laterally next to the conveyor belt system 8. It is also located
under the travel path of the cardboard storage carriage unit 4. The
flap 7 is mounted in/on the bridge 100 so that it pivots. The flap
7 is displaceable about a horizontal pivot axis which runs parallel
to the redirecting rolls 206. The flap 7 fits the opening 207. In
its closed position, the flap 7 extends horizontally and closes the
opening 207. In its open position, the flap 7 is deflected out of
the horizontal and leaves the opening 207 open.
[0074] The forward and reverse drive system 208 is able to drive
the conveyor belt 205 either forward or in the reverse direction.
The forward and reverse drive system 208 is connected to the
conveyor belt system 8.
[0075] The device for cardboard storage and removal has the control
system 209.
[0076] As can be seen in FIGS. 3, 4 and 5, the operating principle
of the present embodiment is as follows: the entry end of the
conveyor system 2 for conveying the single-sided laminated
corrugated cardboard web is arranged adjacent to the exit of the
production machine 1 for producing the single-sided laminated
corrugated cardboard web, which issues the single-sided laminated
corrugated cardboard web; the single-sided laminated corrugated
cardboard web 11 issued from the production machine 1 for producing
the single-sided laminated corrugated cardboard web is transported
to the conveyor belt for conveying the single-sided laminated
corrugated cardboard web by an inclined guide frame means 10 and
the single-sided laminated corrugated cardboard web 11 is
transported by the conveyor belt for conveying the single-sided
laminated corrugated cardboard web to the exit end of the conveyor
system 2 for conveying the single-sided laminated corrugated
cardboard web and is transported further to the conveyor belt
system 8, after which it is run through the clamping and cutting
unit 5. The inclined guide frame means 10 is designed for
transporting upwards.
[0077] The movable cardboard storage carriage unit 4 moves
horizontally from the exit end to the entry end of the conveyor
system 2 for conveying the single-sided laminated corrugated
cardboard web in order to provide the storage for the cardboard,
the first cardboard storage roll 41 and the second cardboard
storage roll 42 in the movable cardboard storage carriage unit 4
feed the single-sided laminated corrugated cardboard web 11 in turn
around the first cardboard guide roll 3, the first cardboard
storage roll 41, the second cardboard guide roll 31 and the second
cardboard storage roll 42. This process is shown in FIGS. 1, 2. By
running the cardboard storage carriage unit 4 by means of the
associated drive system 204 towards the guide frame means 10 or,
respectively, the entry end of the conveyor system 2, the length of
the stored, single-sided laminated corrugated cardboard web 11
gradually increases. This is attributed to the fact that the
single-sided laminated corrugated cardboard web 11 is now also
being guided around the cardboard storage rolls 41, 42 of the
cardboard storage carriage unit 4, which is moving away from the
cardboard guide rolls 3, 31 and, in doing so, the single-sided
laminated corrugated cardboard web 11 is stored as it is being
carried along. The single-sided laminated corrugated cardboard web
11 thus runs several times back and forth or in a meandering
fashion, in the device for cardboard storage and removal, which
results in an increased length of the single-sided laminated
corrugated cardboard web 11 in the device for cardboard storage and
removal.
[0078] When the movable cardboard storage carriage unit 4 reaches
the limit of its path, the stored, single-sided laminated
corrugated cardboard web 11 reaches its maximum length. Compared
with FIG. 2, the movable cardboard storage carriage unit 4 is then
moved even further towards the guide frame means 10. Then, the
cardboard storage carriage unit 4 is arranged adjacent to the guide
frame means 10.
[0079] The single-sided laminated corrugated cardboard web 11 then
has sections running parallel to each other in the device for
cardboard storage and removal, wherein said sections are arranged
with gaps between each other, or one behind the other, in the
conveying direction of the single-sided laminated corrugated
cardboard web 11. The separating plate 6 is thus located between
two sections of the single-sided laminated corrugated cardboard web
11, according to which their corrugated webs are facing each other
or, respectively, their liner webs/laminating webs are facing away
from each other. Because of the separating plate 6, the corrugated
tips of the single-sided laminated corrugated cardboard web 11 are
protected from damage and the single-sided laminated corrugated
cardboard web 11 itself is not damaged in the event that the
production machine 1 for producing the single-sided laminated
corrugated cardboard web is started up again. In particular, the
separating plate 6 thus prevents the corrugated tips of the one
section of the single-sided laminated corrugated cardboard web 11
from lying in corresponding corrugated valleys of the adjacent
section of the single-sided laminated corrugated cardboard web 11
which can cause damage to the single-sided laminated corrugated
cardboard web 11 or can result in disruption of production.
[0080] When the cardboard storage carriage unit 4 is moved back
again towards the exit end of the conveyor system 2, this causes
the length of the corrugated cardboard web 11 stored in the device
for cardboard storage and removal to shorten again until it reaches
its minimum when the cardboard storage carriage unit 4 is no longer
redirecting the single-sided laminated corrugated cardboard web
11.
[0081] If the detection means detects a splicing defect or other
defective pieces, the clamping and cutting unit 5 is started to
prevent the further transportation of the single-sided laminated
corrugated cardboard web 11. The clamping and cutting unit 5 thus
brings the single-sided laminated corrugated cardboard web 11 to a
halt. This is performed by firmly clamping the single-sided
laminated corrugated cardboard web 11 at the clamping and cutting
unit 5. In the meantime, the control system 209 commands the
movable cardboard storage carriage unit 4 to return to the exit end
of the conveyor system 2 for conveying the single-sided laminated
corrugated cardboard web, and the single-sided laminated corrugated
cardboard web 11 is cut by the clamping and cutting unit 5 into two
pieces 110 and 111. In doing so, the length of the single-sided
laminated corrugated cardboard web 11 stored in the device for
cardboard storage and removal is reduced again until it reaches its
minimum when the cardboard storage rolls 41, 42 no longer redirect
the single-sided laminated corrugated cardboard web 11.
[0082] Next, the speed of the conveyor system 2 is reduced by the
control system 209. It is reduced to about 5% to 20% of the
production speed of the production machine 1 for producing the
single-sided laminated corrugated cardboard web.
[0083] Because of the difference in speeds between the conveyor
belt for conveying the single-sided laminated corrugated cardboard
web and the production machine 1 for producing the single-sided
laminated corrugated cardboard web, the defective piece 111 of the
single-sided laminated corrugated cardboard web 11, which has not
yet run through the clamping and cutting unit 5, is left on the
conveyor belt for conveying the single-sided laminated corrugated
cardboard web where it forms a loop, wherein the defective piece
111 is stored; whereas the usable piece 110, which ran through the
clamping and cutting unit 5 already, runs through the movable
cardboard storage carriage unit 4 and is transported onward by the
conveyor belt system 8.
[0084] The usable piece 110 is conveyed by the conveyor belt system
8 until its end reaches the cardboard storage carriage unit 4, it
is secured to the latter and it is lifted off the conveyor belt
system 8.
[0085] Then the control system changes the conveying direction of
the conveyor belt system 8 and simultaneously releases the clamping
and cutting unit 5. The defective piece 111 of the single-sided
laminated corrugated cardboard web which has remained on the
conveyor belt for conveying the single-sided laminated corrugated
cardboard web moves forward with the conveyor belt for conveying
the single-sided laminated corrugated cardboard web.
[0086] Because of the change in the conveying direction of the
conveyor belt system 8, the defective piece 111 of the single-sided
laminated corrugated cardboard web is conveyed to the position of
the flap 7 and is transported through the opening to the waste
cardboard collecting carriage 9 which is arranged under the
opening. At this point, the flap 7 is in its open position so that
the defective piece 111 is able to pass through the opening
207.
[0087] After the entire defective piece 111 of the single-sided
laminated corrugated cardboard web has gone through the clamping
and cutting unit 5, the control system starts up the clamping and
cutting unit 5 again in order to\ cut off the single-sided
laminated corrugated cardboard web 11, and, after the defective
piece 111 has been ejected into the waste cardboard collecting
carriage 9, the control system finally changes the conveying
direction of the conveyor belt system 8 again, and the usable
single-sided laminated corrugated cardboard web 11 is released from
the production machine 1 for producing the single-sided laminated
corrugated cardboard web by the clamping and cutting unit 5,
transported by the movable cardboard storage carriage unit 4 and
then joined to the earlier usable single-sided laminated corrugated
cardboard web 10, and then the movable cardboard storage carriage
unit 4 continues on to perform the cardboard storage function.
[0088] Before the single-sided laminated corrugated cardboard web
11 is cut by the clamping and cutting unit 5, the single-sided
laminated corrugated cardboard web 11 is firmly clamped by the
clamping and cutting unit 5. By cutting the single-sided laminated
corrugated cardboard web 11, the defective piece 111 is cut out of
the single-sided laminated corrugated cardboard web 11.
[0089] The corrugated cardboard production line including the
device for cardboard storage and removal is described below with
reference also to FIG. 6. The corrugated cardboard production line
illustrated in FIG. 6 serves to produce a five-layer corrugated
cardboard 210 with two single-sided laminated corrugated cardboard
webs 11 and a single-layer laminating web 211.
[0090] The corrugated cardboard production line has a first
splicing device 212 for producing the laminating web 211. To
produce the two single-sided laminated corrugated cardboard webs
11, the corrugated cardboard production line has two of the
production machines 1 for producing the single-sided laminated
corrugated cardboard web.
[0091] The first splicing device 212 has a first unrolling unit for
unrolling a finite first material web from a first material roll
and a second unrolling unit for unrolling a finite second material
web from a second material roll. The finite first and second
material webs are joined together for producing the continuous
laminating web 211 by means of a joining and cutting unit (not
shown) of the first splicing device 212.
[0092] Each production machine 1 is provided with a second splicing
device 213 and a third splicing device 214. Each second splicing
device 213 has a third unrolling unit for unrolling a finite third
material web from a third material roll and a fourth unrolling unit
for unrolling a finite fourth material web from a fourth material
roll. The finite third and fourth material webs are each joined
together to produce a continuous first material web by means of a
joining and cutting unit (not shown) of the second splicing device
213.
[0093] Each third splicing device 214 has a fifth unrolling unit
for unrolling a finite fifth material web from a fifth material
roll and a sixth unrolling unit for unrolling a finite sixth
material web from a sixth material roll. The finite fifth and sixth
material webs are each joined together to produce a continuous
second material web by means of a joining and cutting unit (not
shown) of the respective third splicing device 214.
[0094] A continuous first material web and a continuous second
material web are fed to each production machine 1 for producing a
single-sided laminated corrugated cardboard web 11.
[0095] Each production machine 1 for producing a single-sided
laminated corrugated cardboard web 11 comprises a corrugating roll
arrangement with corrugating rolls mounted to rotate for producing
a corrugated web with fluting from the continuous first material
web. The corrugating rolls form a slit between said rolls to pass
through and corrugate the continuous first material web.
[0096] In order to adhesively join the corrugated web with the
respective continuous second material web to the single-sided
laminated corrugated cardboard web 11, each production machine 1
for producing the single-sided laminated corrugated cardboard web
has a gluing unit which comprises, in turn, an adhesive metering
roll, an adhesive container and an adhesive applicating roll. In
order to pass through and apply adhesive to the corrugated web, the
adhesive applicating roll forms a gluing slit with the lower
corrugating roll, wherein the adhesive applicating roll applies
adhesive from the adhesive container to tips of the fluting on the
corrugated web. The continuous second material web with the
corresponding corrugated web provided with adhesive is then joined
to the single-sided laminated corrugated cardboard web 11 in the
production machine 1 for producing the single-sided laminated
corrugated cardboard web 11.
[0097] Each production machine 1 for producing the single-sided
laminated corrugated cardboard web 11 has a pressing device for
pressing the continuous second material web against the corrugated
web provided with adhesive. The pressing device advantageously is
designed as a pressure belt module. It presses against the
continuous second material web which, in turn, is pressed against
the corrugated web provided with adhesive on the corrugated web in
contact with the upper corrugating roll.
[0098] In order to provide intermediate storage and to buffer the
single-sided laminated corrugated cardboard webs 11, these latter
are fed through the respective guide frame means 10 of the
corresponding device for cardboard storage and removal.
[0099] Downstream of the devices for cardboard storage and removal,
a preheating device 215 for the corrugated cardboard production
line is located, comprising three heated rolls 216 arranged one
over the other. The single-sided laminated corrugated cardboard
webs 11 and the laminating web 211 are fed to the preheating device
215 and partially wind round the respective heated roll 216.
[0100] Downstream of the preheating device 215, the corrugated
cardboard production line has a gluing device 217 with two gluing
rolls arranged one over the other which are partially immersed in a
respective adhesive bath. The single-sided laminated corrugated
cardboard webs 11 are situated in contact with the respective
gluing roll and are provided with adhesive. Downstream of the
gluing device 217, the corrugated cardboard production line has a
heat/pressure device 218 in which the single-sided laminated
corrugated cardboard webs 11 provided with adhesive and the
laminating web 211 are heated and pressed together. For this, the
heat/pressure device 218 has a horizontal table provided with
heating elements, said table extending in the transportation
direction of the single-sided laminated corrugated cardboard webs
11 and the laminating web 211 present there. Above the table, the
heat/pressure device 218 has a continuous guided pressure belt. A
pressure gap is formed between the pressure belt and the table,
through which gap the single-sided laminated corrugated cardboard
webs 11 and the laminating web 211 are transported one above the
other and where they are pressed together. The multi-layer
corrugated cardboard 210 is formed in the heat/pressure device
218.
[0101] Downstream of the heat/pressure device 218, the corrugated
cardboard production line has a cross-cutting device 219 which
serves, for example, to remove splice regions from the corrugated
cardboard 210. For this, the cross-cutting device 219 has a cutter
bar roll with a cutter and a cutting support associated with the
cutter bar roll.
[0102] Downstream of the cross-cutting device 219, the corrugated
cardboard production line has a longitudinal slitting/scoring
device 220, comprising two scoring stations arranged one after the
other and two longitudinal slitting stations arranged one after the
other. The continuous corrugated cardboard 210 can be divided up
into continuous longitudinal corrugated cardboard pieces by the
longitudinal slitting stations.
[0103] Downstream of the longitudinal slitting/scoring device 220,
the corrugated cardboard production line has a switch 221 which
comprises a feed table for supplying the continuous corrugated
cardboard pieces and a discharge table unit with several discharge
tables to take away said pieces at several levels.
[0104] Downstream of the switch 221, a second cross-cutting device
222 is provided which has two partial cross-cutting devices
arranged one over the other. Each partial cross-cutting device is
able to cut the respective continuous corrugated cardboard piece
laterally, thus producing sheets of corrugated cardboard.
[0105] Downstream of each partial cross-cutting device, a stacking
device 223 is arranged to stack the sheets of corrugated
cardboard.
Embodiment 2
[0106] A device for cardboard storage and removal for a bridge 100
in a corrugated cardboard production line is described below, based
on the device already described for cardboard storage and removal
for a bridge 100 in a corrugated cardboard production line and
referring to FIGS. 7 to 15. Reference will be made to the preceding
description.
[0107] Compared with the preceding device, the device for cardboard
storage and removal for a bridge 100 in a corrugated cardboard
production line according to FIGS. 7 to 15 additionally has a
splicing device 224, which, in particular, provides for the
(semi-)automatic splicing together of usable single-sided laminated
corrugated cardboard webs.
[0108] The splicing device 224 is advantageously designed as a
manual splicing device. It is associated with the first cardboard
guide roll 3. The splicing device 224 is telescopic, pivotable
and/or hinged. It can be extended or retracted and, in doing so,
has a correspondingly displaceable splicing part 230.
[0109] The clamping and cutting unit 5 comprises a clamping part
225 and a cutting part 226 arranged after the clamping part 225.
The clamping part 225 is designed, for example, as a clamping
block. It is displaceable between a clamping position and a
released position or, respectively, inactive position relative to
the single-sided laminated corrugated cardboard web.
[0110] The cutting part 226 is designed, for example, as a knife,
blade or similar. It is displaceable between a cutting position and
an inactive position relative to the single-sided laminated
corrugated cardboard web.
[0111] According to FIG. 7, the flap 7 is in its closed position so
that the opening 207 is closed.
[0112] The clamping and cutting unit 5, which includes both the
clamping part 225 as well as the cutting part 226, is in its
inactive position.
[0113] The splicing device 224 is also in its inactive position.
There is a gap between the splicing part 230 and the first
cardboard guide roll 3.
[0114] The conveyor system and the conveyor belt system 8 are
operating and are conveying the single-sided laminated corrugated
cardboard web.
[0115] The cardboard storage carriage unit 4 is in a storage
position so that the device for cardboard storage and removal for a
bridge 100 in a corrugated cardboard production line has just
stored a single-sided laminated corrugated cardboard web 11. The
single-sided laminated corrugated cardboard web thus runs around
the first cardboard guide roll 3, the first cardboard storage roll
41, the second cardboard guide roll 31 and the second cardboard
storage roll 42.
[0116] If a detection means detects a splicing defect or other
defective pieces, as FIG. 8 shows, the cardboard storage carriage
unit 4 is now moved from its storage position to its non-storage
position, whereby the cardboard storage or supply of single-sided
laminated corrugated cardboard web is virtually used up. This is
triggered by the control system. The single-sided laminated
corrugated cardboard web thus runs around the first cardboard guide
roll 3 and the second cardboard storage roll 42.
[0117] In FIG. 9, the conveyor belt system 8 is halted.
[0118] The clamping and cutting unit 5 is now situated in its
active position. The clamping part 225 presses the single-sided
laminated corrugated cardboard web to clamp it while the cutting
part 226 cuts the single-sided laminated corrugated cardboard web
laterally into a leading piece 227 and a trailing piece 228. The
trailing piece 228 is clamped firmly in place by the clamping part
225. The leading piece 227 is held firmly in place by the splicing
device 224, whose splicing part 230 has been moved into its
clamping position. In particular, the leading piece 227 is a usable
piece, whereas the trailing piece 228 is a defective piece.
[0119] As FIG. 10 shows, the cutting part 226 is now moved to its
inactive position while the clamping part 225 remains in its
clamping position.
[0120] The splicing part 230 is again moved to its inactive
position where, so to speak, the single-sided laminated corrugated
cardboard web or the produced leading piece 227 is released. An
adhesive strip (not shown) is applied to the produced leading piece
227 at its downstream end 229. The adhesive strip can be applied
mechanically or manually.
[0121] As FIG. 11 shows, the flap 7 is next pivoted into its open
position so that the opening 207 is opened.
[0122] The clamping part 225 is placed in its inactive position so
that the trailing piece 228 is again released.
[0123] The conveyor belt system 8 is operated such that the
trailing piece 228 is conveyed by the conveyor belt system 8 to the
opening 207 where it is ejected.
[0124] As FIG. 12 shows, the clamping part 225 and the cutting part
226 are again placed in their active position so that the trailing
piece 228 is clamped and separated. This takes place if the
single-sided laminated corrugated cardboard web is again defective.
The trailing piece is ejected through the opening 207 and guided
into the waste cardboard collecting carriage 9.
[0125] As FIG. 13 shows, the cutting part 226 is now placed again
in its inactive position. The splicing device 224 is activated
again so that the splicing part 230 extends out to a splicing
position and the single-sided laminated corrugated cardboard web is
pressed against the first cardboard guide roll 3, clamping it. The
applied adhesive strip is used to join the leading piece 227 firmly
to the single-sided laminated defect-free corrugated cardboard web.
In this way, a continuous single-sided laminated defect-free
corrugated cardboard web is produced.
[0126] As FIG. 14 shows, the flap 7 is now pivoted into its closed
position so that the opening 207 is now closed. The splicing part
230 is placed again in its inactive position. Furthermore, the
clamping part 225 is placed in its inactive position. The conveyor
belt system 8 is operated again so that the single-sided laminated
corrugated cardboard web is transported away from the flap 7.
[0127] Then, the cardboard storage carriage unit 4 is moved to a
storage position so that a supply of single-sided laminated
corrugated cardboard web 11 is created.
[0128] The described ejection or splicing steps are brought about,
in particular, by the control system.
[0129] A catwalk 231 extends, or ends, next to the splicing device
so that a worker can reach the splicing device 224 easily and can
carry out required manual steps there, for example.
[0130] While specific embodiments of the invention have been shown
and described in detail to illustrate the application of the
principles of the invention, it will be understood that the
invention may be embodied otherwise without departing from such
principles.
* * * * *